The Nets kicked off their season in style Monday afternoon, packing media members into Barclays Center to introduce their star-studded — and super-expensive — roster for the team’s media day, before jetting down to Duke University to begin training camp on Tuesday morning.

Here are some of the things that came up throughout the day:

— Paul Pierce is trying to bring the championship-or-bust mentality of the Boston Celtics, his former employer and the most successful organization in NBA history, with him to Brooklyn.

“Truthfully, it’s not that important,” Pierce said of winning an Atlantic Division title. “I came here to win a championship. I don’t even want to see an Atlantic banner put up if we win it. I didn’t even know how many Atlantic Division championships we won in Boston.

“I don’t remember getting a hat, T-shirt, a call for winning the Atlantic Division,” he continued. “You don’t get anything for it. The expectations have grown here in Brooklyn. It’s no longer, ‘The New Jersey Nets, hopefully we can win the division.’

“Now, they’re the Brooklyn Nets with championship aspirations, and you see that with the people around here, the owner, what they’ve done to try to turn this organization around. And that’s what they are quietly building on.”

— Reggie Evans, the Nets’ colorful rebounding machine of a power forward, made quite a stir on Twitter recently when he posted a clean-shaven picture of himself, having gotten rid of his trademark beard.

But by the time he arrived in Brooklyn on Monday, Evans was already growing a new version of the beard, and quickly dashed any thoughts of him getting rid of it for good.

“Hell, yeah,” Evans said when asked if he was growing the beard back, drawing laughs. “I can’t really say why I’m gonna cut my beard off because I don’t want it to get back to a certain individual why I cut it off … I don’t want to make him mad.

“But I said, ‘Why don’t I cut it off now, so when I get to my first game against Cleveland, it’ll be back? Like I said, I got frustrated and pissed off when something happened, and I just said, cut it off. But I’m growing it back, yeah.”

— Jason Terry knows Jason Kidd as well or better than anyone on the Nets, having spent several seasons playing alongside him in Dallas, where they won a championship together in 2011. Terry is very confident that his old Mavericks teammate is ready to begin his new career as a coach.

“Jason Kidd is ready for this job,” Terry said. “I don’t know if any other guy would be one year — not even — removed from playing [and be able to] transition into coaching. That’s because he’s been a coach his entire life.

“It’s going to be a great challenge for him, but he’s up for it. He’s never fazed. When I played with him in the backcourt in Dallas, you never knew if we were up 20 or down 20. But when he spoke, people listened. He has the ultimate respect from everybody in this locker room. He’s ready to lead this team.”

— Terry also addressed his subpar, one-year stint in Boston. Terry signed a three-year deal for the mid-level exception with the Celtics last summer before being included in the blockbuster trade to the Nets this offseason.

Even though his numbers, outside of his points total, were mostly in line with recent years in Dallas, Terry didn’t look like the same player, and admitted he was happy to have a fresh start with the Nets — as well as to have his No. 31 back, after wearing No. 4 in Boston because the 31 jersey is retired in honor of Cedric Maxwell.

“Every day I thank God,” Terry said of getting his old number back with the Nets, “because I don’t know who that was in No. 4 [in Boston]. He had the headband, he had the high socks, but something just wasn’t right.

“[When] I got the number back, I was excited. You will see my flying around the Barclays Center.”

— Tyshawn Taylor was a high school star at St. Anthony High School in Jersey City under Hall of Fame coach Bob Hurley, and knows all about the history of the Knicks and Nets — and their vastly different levels of fan support in the area — over the past 15-20 years.

But Taylor has noticed a difference in the buzz around the Nets since the team moved to Brooklyn and assembled a star-studded roster to play there.

“Maybe people are bias when they see me,” Taylor said, “[but] I just feel like a lot of people want us to be the team. It just seems like people want Brooklyn to be a better team. They want us to beat the Knicks, that’s what I’m getting.

“I think being new and fresh, that’s more appealing. You have your diehard Knicks fans, you have your fans who root for both teams. I think us being new, us being fresh, I think that helps for sure. In due time, if we continue to be a good team and produce, I think [it will be a Nets town].”

“I’m just trying to stay in the rehabilitation program, and I think it’s going good,” he said. “We’re going to try some different things at Duke, and we’ll see how it goes down there.”

Shengelia, who said he has started to run recently, said he’s also been swimming and doing some shooting, and is hoping to be ready by the start of the regular season.

“I think maybe the last week of training camp I can join the team, I hope,” he said. “They told me I’ll be ready in November, or the beginning of November, but I hope [earlier].”

Shengelia, along with fellow second-year player Tyshawn Taylor and rookie Mason Plumlee, is expected to see extended minutes with the D-League affiliate, the Springfield Armor, this season thanks to the depth on the Nets roster. He also admitted how much it hurt him that his injury kept him from representing his native Republic of Georgia in the Eurobasket tournament last month.

“It doesn’t even make sense to say how hard it was, because I can’t explain it to you,” he said. “When I see from the outside that my team is playing, they need me and I need them, and it’s very tough on me [to watch] … but it is what it is.”